EP4123039A4 - Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs - Google Patents

Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs Download PDF

Info

Publication number
EP4123039A4
EP4123039A4 EP21770456.8A EP21770456A EP4123039A4 EP 4123039 A4 EP4123039 A4 EP 4123039A4 EP 21770456 A EP21770456 A EP 21770456A EP 4123039 A4 EP4123039 A4 EP 4123039A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
steel pipe
seamless stainless
producing
producing seamless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21770456.8A
Other languages
English (en)
French (fr)
Other versions
EP4123039A1 (de
Inventor
Yuichi Kamo
Masao YUGA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP4123039A1 publication Critical patent/EP4123039A1/de
Publication of EP4123039A4 publication Critical patent/EP4123039A4/de
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • C21D1/25Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/10Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085Cooling or quenching
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/008Ferrous alloys, e.g. steel alloys containing tin
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/60Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/001Austenite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
EP21770456.8A 2020-03-19 2021-03-11 Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs Pending EP4123039A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020048550 2020-03-19
PCT/JP2021/009892 WO2021187331A1 (ja) 2020-03-19 2021-03-11 ステンレス継目無鋼管およびステンレス継目無鋼管の製造方法

Publications (2)

Publication Number Publication Date
EP4123039A1 EP4123039A1 (de) 2023-01-25
EP4123039A4 true EP4123039A4 (de) 2024-09-25

Family

ID=77772036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21770456.8A Pending EP4123039A4 (de) 2020-03-19 2021-03-11 Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs

Country Status (6)

Country Link
US (1) US12497670B2 (de)
EP (1) EP4123039A4 (de)
JP (1) JP7156537B2 (de)
CN (1) CN115349024A (de)
MX (1) MX2022011507A (de)
WO (1) WO2021187331A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020202957A1 (ja) * 2019-03-29 2020-10-08 Jfeスチール株式会社 ステンレス継目無鋼管
WO2021065263A1 (ja) 2019-10-01 2021-04-08 Jfeスチール株式会社 ステンレス継目無鋼管およびその製造方法
JP6954492B1 (ja) 2020-02-05 2021-10-27 Jfeスチール株式会社 ステンレス継目無鋼管およびその製造方法
EP4123039A4 (de) 2020-03-19 2024-09-25 JFE Steel Corporation Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs
US12398436B2 (en) 2020-04-01 2025-08-26 Jfe Steel Corporation High-strength stainless steel seamless pipe for oil country tubular goods and method for manufacturing same
EP4509630A4 (de) * 2022-07-05 2026-04-01 Jfe Steel Corp Nahtloses edelstahlrohr und herstellungsverfahren dafür
CN119256106A (zh) * 2022-07-05 2025-01-03 杰富意钢铁株式会社 不锈钢无缝钢管及其制造方法
WO2024009564A1 (ja) 2022-07-05 2024-01-11 Jfeスチール株式会社 ステンレス継目無鋼管およびその製造方法
EP4636112A1 (de) * 2023-04-06 2025-10-22 JFE Steel Corporation Nahtloses edelstahlrohr und herstellungsverfahren dafür

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120031530A1 (en) * 2009-05-18 2012-02-09 Sumitomo Metal Industries, Ltd. Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well
CN103938124A (zh) * 2014-03-26 2014-07-23 西安石油大学 一种用于高温高压井耐CO2+Cl-腐蚀的高强15Cr油管
JP2017039966A (ja) * 2015-08-19 2017-02-23 新日鐵住金株式会社 油井管
EP3385403A1 (de) * 2016-02-08 2018-10-10 JFE Steel Corporation Nahtloses rohr aus hochfestem edelstahl für ölbohrloch und herstellungsverfahren dafür
WO2019035329A1 (ja) * 2017-08-15 2019-02-21 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管およびその製造方法
EP3456852A1 (de) * 2016-07-27 2019-03-20 JFE Steel Corporation Hochfestes nahtloses edelstahlrohr für ölbohrungen und herstellungsverfahren dafür
EP3569724A1 (de) * 2017-01-13 2019-11-20 JFE Steel Corporation Hochfestes nahtloses edelstahlrohr und herstellungsverfahren dafür

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4415054B1 (de) * 1966-01-06 1969-07-04
JP4415054B2 (ja) 2008-07-31 2010-02-17 株式会社コナミデジタルエンタテインメント ゲームプログラム、ゲーム装置、及びゲーム制御方法
CN102534418A (zh) * 2012-02-29 2012-07-04 宝山钢铁股份有限公司 一种油套管用马氏体不锈钢及其制造方法
RU2583207C1 (ru) 2012-03-26 2016-05-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн Нержавеющая сталь для нефтяных скважин и труба из нержавеющей стали для нефтяных скважин
JP5924256B2 (ja) 2012-06-21 2016-05-25 Jfeスチール株式会社 耐食性に優れた油井用高強度ステンレス鋼継目無管およびその製造方法
JP5967066B2 (ja) * 2012-12-21 2016-08-10 Jfeスチール株式会社 耐食性に優れた油井用高強度ステンレス継目無鋼管およびその製造方法
JP6156609B1 (ja) * 2016-02-08 2017-07-05 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管およびその製造方法
BR112018068914B1 (pt) 2016-03-29 2022-02-15 Jfe Steel Corporation Tubo de aço inoxidável sem costura de alta resistência para poço de óleo
MX2019010035A (es) * 2017-02-24 2019-09-26 Jfe Steel Corp Tubo sin costura de acero inoxidable de alta resistencia para productos tubulares de region petrolifera, y metodo para la produccion del mismo.
WO2021065263A1 (ja) 2019-10-01 2021-04-08 Jfeスチール株式会社 ステンレス継目無鋼管およびその製造方法
JP6954492B1 (ja) 2020-02-05 2021-10-27 Jfeスチール株式会社 ステンレス継目無鋼管およびその製造方法
EP4123040A4 (de) 2020-03-19 2024-10-02 JFE Steel Corporation Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs
EP4123039A4 (de) 2020-03-19 2024-09-25 JFE Steel Corporation Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs
US12398436B2 (en) 2020-04-01 2025-08-26 Jfe Steel Corporation High-strength stainless steel seamless pipe for oil country tubular goods and method for manufacturing same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120031530A1 (en) * 2009-05-18 2012-02-09 Sumitomo Metal Industries, Ltd. Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well
CN103938124A (zh) * 2014-03-26 2014-07-23 西安石油大学 一种用于高温高压井耐CO2+Cl-腐蚀的高强15Cr油管
JP2017039966A (ja) * 2015-08-19 2017-02-23 新日鐵住金株式会社 油井管
EP3385403A1 (de) * 2016-02-08 2018-10-10 JFE Steel Corporation Nahtloses rohr aus hochfestem edelstahl für ölbohrloch und herstellungsverfahren dafür
EP3456852A1 (de) * 2016-07-27 2019-03-20 JFE Steel Corporation Hochfestes nahtloses edelstahlrohr für ölbohrungen und herstellungsverfahren dafür
EP3569724A1 (de) * 2017-01-13 2019-11-20 JFE Steel Corporation Hochfestes nahtloses edelstahlrohr und herstellungsverfahren dafür
WO2019035329A1 (ja) * 2017-08-15 2019-02-21 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管およびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021187331A1 *

Also Published As

Publication number Publication date
BR112022018370A2 (pt) 2022-11-08
JP7156537B2 (ja) 2022-10-19
EP4123039A1 (de) 2023-01-25
US12497670B2 (en) 2025-12-16
MX2022011507A (es) 2022-10-07
WO2021187331A1 (ja) 2021-09-23
CN115349024A (zh) 2022-11-15
JPWO2021187331A1 (de) 2021-09-23
US20230048685A1 (en) 2023-02-16

Similar Documents

Publication Publication Date Title
EP4123039A4 (de) Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs
EP4086014A4 (de) Nahtloses rohr aus edelstahl und verfahren zur herstellung davon
EP3767000A4 (de) Nahtloses stahlrohr aus martensitischem edelstahl für erdölbohrrohre und verfahren zu seiner herstellung
EP4067525A4 (de) Walzplattiertes blech aus kohlenstoffstahl und rostfreier austenitischer stahl sowie verfahren zu seiner herstellung
EP3845680A4 (de) Nahtloses rohr aus martensitischem edelstahl für erdölbohrungen und verfahren zu seiner herstellung
EP3862456A4 (de) Plattiertes blech aus austenitischem edelstahl, basisstahlblech und verfahren zur herstellung von plattiertem stahlblech
EP3954792A4 (de) Stahlblech und herstellungsverfahren dafür
EP4095272A4 (de) Stahlblech und verfahren zur herstellung davon
EP3919200A4 (de) Nahtloser dosenkörper und verfahren zur herstellung eines nahtlosen dosenkörpers
DK2285507T3 (da) Fremgangsmåde til fremstilling af et stort stålrør
EP4183892A4 (de) Stahlblech und verfahren zur herstellung davon
EP4012054A4 (de) Rostfreies nahtloses stahlrohr und verfahren zur herstellung davon
EP2530172A4 (de) Herstellungsverfahren für ein in einem leitungsrohr verwendetes nahtloses stahlrohr sowie in einem leitungsrohr verwendetes nahtloses stahlrohr
EP2172573A4 (de) Nahtloses rohr aus martensitischem nichtrostendem stahl für ölbohrungsrohr und herstellungsverfahren dafür
EP4296396A4 (de) Stahlplatte, verfahren zur herstellung einer stahlplatte und verfahren zur herstellung einer zwischenstahlplatte
EP3822381A4 (de) Nahtloses stahlrohr und herstellungsverfahren dafür
EP4123040A4 (de) Nahtloses edelstahlrohr und verfahren zur herstellung eines nahtlosen edelstahlrohrs
EP4035787A4 (de) Verfahren zum walzen von superaustenitischem rostfreiem stahl
EP4015659A4 (de) Verschleissfestes stahlblech und verfahren zu seiner herstellung
EP3854890A4 (de) Rostfreies nahtloses duplex-stahlrohr und verfahren zu seiner herstellung
EP3910083A4 (de) Stahlblech und verfahren zur herstellung davon
CN102500619A (zh) 一种无缝钛焊管及生产方法
EP2787090A4 (de) Verfahren zum walzen/ziehen eines nickelfreien edelstahlmaterials mit hohem stickstoffanteil, nahtloses stahlrohr aus dem nickelfreien edelstahlmaterial mit hohem stickstoffanteil und herstellungsverfahren dafür
EP3805420A4 (de) Nahtloses stahlrohr aus martensitischem edelstahl für erdölbohrrohre und verfahren zu seiner herstellung
EP3916112A4 (de) Dickes stahlblech und herstellungsverfahren dafür

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220916

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: C21D0009080000

Ipc: C22C0038440000

A4 Supplementary search report drawn up and despatched

Effective date: 20240823

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/26 20060101ALI20240819BHEP

Ipc: C21D 1/25 20060101ALI20240819BHEP

Ipc: C21D 1/18 20060101ALI20240819BHEP

Ipc: C21D 6/00 20060101ALI20240819BHEP

Ipc: C21D 8/10 20060101ALI20240819BHEP

Ipc: C21D 9/08 20060101ALI20240819BHEP

Ipc: C22C 38/52 20060101ALI20240819BHEP

Ipc: C22C 38/48 20060101ALI20240819BHEP

Ipc: C22C 38/50 20060101ALI20240819BHEP

Ipc: C22C 38/54 20060101ALI20240819BHEP

Ipc: C22C 38/46 20060101ALI20240819BHEP

Ipc: C22C 38/00 20060101ALI20240819BHEP

Ipc: C22C 38/06 20060101ALI20240819BHEP

Ipc: C22C 38/04 20060101ALI20240819BHEP

Ipc: C22C 38/02 20060101ALI20240819BHEP

Ipc: C22C 38/60 20060101ALI20240819BHEP

Ipc: C22C 38/42 20060101ALI20240819BHEP

Ipc: C22C 38/44 20060101AFI20240819BHEP